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Good but very loud!

This is a great product. I have always been a fan of hmf. It was easy to put on and sounded great after. It gave it better power but it was very loud! Do not buy if you are worried about noise complaints!

This Works

Installed in Competition Series slip-on on 2005 TRX450R. Brought noise down substantially versus the Stage 3 insert that was in it (the stage 1 and 2 inserts were not available to me). The sound is not as quiet as the OEM muffler, but it's about equal to a quiet dirt bike such as a CRF250R. I would call it a happy medium of performance and sound between a choked-up stock muffler and a loud and raspy open aftermarket unit. 5 stars.